Process for increasing sulfur recovery rate in steel smelting
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 江阴市茂昌金属新材料科技有限公司
- Publication Date
- 2018-12-28
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to the field of iron and steel smelting production technology, in particular to a technology for improving the recovery rate of sulfur element in iron and steel smelting. Background technique
[0002] Users have higher and higher requirements for the cleanliness of steel, so we must try our best to reduce the number and size of non-metallic inclusions in steel, especially for high-quality cold-rolled products.
[0003] Sulfur is a non-metallic substance, and it is easy to react with oxygen in molten steel. To increase the recovery rate of sulfur, the oxygen content must be reduced first, and the oxygen activity in molten steel at the end of converter smelting and the (FeO+MnO) in slag must be controlled. content, because this is the source of inclusions in steel.
[0004] In any case, the effect of oxygen on the properties of metals is harmful. Oxygen can embrittle metals through different mechanisms due to the different states o...